Homeowners should compare several written quotes covering the system size, panels, inverter, installation work, warranties and total price. Check that the installer uses appropriately licensed tradespeople and is accredited under the Clean Energy Council’s current installer scheme if you want to access eligible government incentives. Ask who will handle grid connection, approvals, maintenance and warranty claims, and check independent reviews rather than relying only on testimonials. A reputable installer should assess your roof, electricity use and switchboard before recommending a system. Confirm the final design and any incentive eligibility with the installer and relevant government or energy authority.